Smoke bomb is a killstreak used by Ninja class.
Requires 2 kills to activate
Once the killstreak is activated, it teleports the Ninja to any random location on the map, and makes them invisible for 2 seconds.
Use this killstreak when you capture the enemy flag. It can teleport you across the entire map, making for an instant point.
Be careful, the location you teleport to is completely random, so you might be teleported only a few meters away, or next to a cluster of enemies.
You can also use this killstreak to escape near - death situations, or to sneak up on somebody to assassinate them.